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Last modified by Admin on 2025/07/15 17:33
From version 5.2
edited by Admin
on 2024/11/13 16:52
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To version 55.1
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on 2025/02/20 12:59
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Title
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1 -2. Connection
1 +2. Installation and connection
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1 -Additional modules.BMS Main 2\.1.WebHome
1 +Battery management systems.BMS Main 2\.1.WebHome
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1 -= ​​​​Headers =
1 +(% data-numbered-headings-start="2" style="--numbered-headings-start: 1;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
2 += Installation and connection =
2 2  
4 +== Installation procedure ==
5 +
6 +Overall and mounting dimensions of the BMS Main 2.1 are shown below.
7 +
8 +[[image:1732198397369-222.png||data-xwiki-image-style-alignment="center" height="393" width="556"]]
9 +
10 +(% style="width:494px" %)
11 +|**Parameter**|(% style="width:178px" %)**Value**
12 +|Overall dimensions (length × width × height), mm|(% style="width:178px" %)120 × 120 × 32
13 +|Mounting dimensions (length × width), mm|(% style="width:178px" %)114 × 114
14 +|Mounting holes|(% style="width:178px" %)M3
15 +|Headers P1, P6-P9 type |(% style="width:178px" %)Molex series Mini-Fit
16 +|Headers P11-P15 type |(% style="width:178px" %)Molex series Micro-Fit
17 +
18 +== Connection procedure ==
19 +
20 +The mounting area of the BMS Main 2.1 must be protected from mechanical particles (dust, dirt, large objects) and water. The installation site must provide convenient access for subsequent connection to the device’s headers.
21 +
22 +1. Connect the charging and discharging contactors to the P6-P9 headers.
23 +1. Connect a current sensor to the P12 header according to its documentation. The positive current direction (indicated by an arrow on the sensor) corresponds to the battery charging. It is recommended to use a shielded cable to connect the current sensor, the shield should be grounded on the side of the current sensor. The cable should be positioned as far as possible from the high current circuits. If the current sensor has a reference voltage line, connect it to pin 4 of the P12 header.
24 +1. Connect the BMS Main 2.1 to the on-board CAN network. Observe the rules for connecting CAN devices. If the BMS Main 2.1 is the last device on a bus, close pins 1-2 on the P21 jumper, otherwise leave the jumper on pins 2-3.
25 +1. Connect a power supply to the P1 header. It is not recommended to power the BMS Main 2.1 from the battery only, since at a critical discharge of the battery, it is not possible to turn on the BMS and close the charging contactor.
26 +
27 +== ​​​​Headers description ==
28 +
3 3  The BMS Main 2.1 headers are shown in figure below.
4 4  
5 -[[The BMS Main 2.1 headers>>image:1731516393377-928.jpeg||height="430" width="428"]]
31 +[[image:1731516393377-928.jpeg||alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
6 6  
7 -== P1 – header for power supply ==
33 +(% class="box warningmessage" %)
34 +(((
35 +**Attention!**
36 +All headers are shown from the device side!
37 +)))
8 8  
9 -[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center" height="93" width="49"]]
39 +=== P1 – header for power supply ===
10 10  
41 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
42 +
43 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
44 +
11 11  |**Pin**|**Name**|**Description**
12 12  |**1**|**GND**|Ground
13 13  |**2**|**V+**|Supply voltage 9-30V
14 14  
15 -== P15 – header for BMS Logic ==
49 +=== P15 – header for BMS Logic ===
16 16  
17 -[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center" height="90" width="83"]]
51 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
18 18  
53 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
54 +
19 19  |**Pin**|**Name**|**Description**
20 20  |**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
21 21  |**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
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22 22  |**3**|**+5V**|Supply voltage for BMS Logic
23 23  |**4**|**GND**|Ground
24 24  
25 -== P12 – header for current sensor ==
61 +=== P12 – header for current sensor ===
26 26  
27 -[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
63 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
64 +
65 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
66 +
67 +|**Pin**|**Name**|**Description**
68 +|**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
69 +|**2**|**GND**|Ground
70 +|**3**|**Vcs**|ADC input (current sensor output)
71 +|**4**|**Vref**|ADC input (current sensor reference signal)
72 +
73 +=== P13 – header for humidity sensor ===
74 +
75 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
76 +
77 +[[image:1732198896526-660.png||data-xwiki-image-style-alignment="center" height="70" width="64"]]
78 +
79 +|**Pin**|**Name**|**Description**
80 +|**1**|**+5V**|Supply voltage 5 V, max 50 mA
81 +|**2**|**GND**|Ground
82 +|**3**|**Vhs**|ADC input (humidity sensor output)
83 +|**4**|**Vts**|ADC input (temperature sensor output)
84 +
85 +=== P8 – header of relay 1 ===
86 +
87 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
88 +
89 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
90 +
91 +By default, relay 1 is used to control the discharging contactor.
92 +
93 +|**Pin**|**Name**|**Description**
94 +|**1**|**V+**|Switching voltage (up to 55V, max 2A)
95 +|**2**|**NO**|Normally open contact
96 +
97 +=== P9 – header of relay 2 ===
98 +
99 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
100 +
101 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
102 +
103 +By default, relay 2 is used to output the “Allow charging” signal.
104 +
105 +|**Pin**|**Name**|**Description**
106 +|**1**|**V+**|Switching voltage (up to 55V, max 2A)
107 +|**2**|**NO**|Normally open contact
108 +
109 +=== P6 – header of relay 3 ===
110 +
111 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
112 +
113 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
114 +
115 +By default, relay 3 is used to control the charging contactor.
116 +
117 +|**Pin**|**Name**|**Description**
118 +|**1**|**V+**|Switching voltage (up to 55V, max 8A)
119 +|**2**|**NO**|Normally open contact
120 +
121 +=== P7 – header of relay 4 ===
122 +
123 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
124 +
125 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
126 +
127 +By default, relay 4 is used to control the heater.
128 +
129 +|**Pin**|**Name**|**Description**
130 +|**1**|**V+**|Switching voltage (up to 55V, max 8A)
131 +|**2**|**NO**|Normally open contact
132 +
133 +=== P14 – header for CAN and RS-485 interfaces ===
134 +
135 +Receptacle Housing: Molex 430250600. Terminals: Molex 43030
136 +
137 +[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center" height="81" width="113"]]
138 +
139 +(% style="width:641px" %)
140 +|**Pin**|**Name**|**Description**
141 +|**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
142 +|**2**|**CAN_H**|CAN H line for communication with external equipment
143 +|**3**|**+5V_CAN**|Supply voltage 5V for external devices, max 200 mA
144 +|**4**|**EXT_RS485_B**|RS-485 line B for communication with external equipment
145 +|**5**|**CAN_L**|CAN L line for communication with external equipment
146 +|**6**|**GND_CAN**|Ground
147 +
148 +=== P21 – CAN termination resistor jumper ===
149 +
150 +[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center" height="78" width="149"]]
151 +
152 +To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
153 +
154 +|**Pin**|**Name**|**Description**
155 +|**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
156 +|**2-3**|**-**|Termination resistor 120 Ohm is not connected
157 +
158 +=== P22 - RS-485 termination resistor jumper ===
159 +
160 +[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center" height="81" width="155"]]
161 +
162 +To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
163 +
164 +|**Pin**|**Name**|**Description**
165 +|**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
166 +|**2-3**|**-**|Terminating resistor 120 Ohm is not connected
167 +
168 +=== P11 – header for discrete inputs/outputs ===
169 +
170 +Receptacle Housing: Molex 430251600. Terminals: Molex 43030
171 +
172 +[[image:1732198937514-731.png||data-xwiki-image-style-alignment="center" height="85" width="272"]]
173 +
174 +|**Pin**|**Name**|**Description**
175 +|**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
176 +|**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
177 +|**15**|**IN_2**|Discrete input #2 “dry contact” (+5V)
178 +|**7**|**GND_2**|Discrete input #2 “dry contact” (ground)
179 +|**14**|**IN_3**|Discrete input #3 “dry contact” (+5V)
180 +|**6**|**GND_3**|Discrete input #3 “dry contact” (ground)
181 +|**13**|**IN_4**|Discrete input #4 “dry contact” (+5V)
182 +|**5**|**GND_4**|Discrete input #4 “dry contact” (ground)
183 +|**12**|**OUT_4**|Discrete output #4 (+5V, 20mA)
184 +|**4**|**GND_OUT_4**|Discrete output #4 (ground)
185 +|**11**|**OUT_3**|Discrete output #3 (+5V, 20mA)
186 +|**3**|**GND_OUT_3**|Discrete output #3 (ground)
187 +|**10**|**OUT_2**|Discrete output #2 (+5V, 20mA)
188 +|**2**|**GND_OUT_2**|Discrete output #2 (ground)
189 +|**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
190 +|**1**|**GND_OUT_1**|Discrete output #1 (ground)
191 +
192 +== Indicators ==
193 +
194 +=== DS1 – power indicator ===
195 +
196 +|**State**|**Description**
197 +|**Lights red**|The device is powered
198 +|**Off**|The device is not powered
199 +
200 +=== DS2 – operation indicator ===
201 +
202 +|**State**|**Description**
203 +|**Blinking green**|The BMS firmware is running
204 +|**Off**|The BMS firmware is not running
205 +
206 +=== DS3 – communication indicator ===
207 +
208 +|**State**|**Description**
209 +|**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
210 +|**Blinking yellow (25Hz)**|Communication with BMS Logic is established
211 +
212 +=== DS4 – error indicator ===
213 +
214 +
215 +|(**State**|**Description**
216 +|(**Blinking red**|Errors in communication with BMS Logic
217 +
218 +=== DS7 – relay 1 indicator ===
219 +
220 +|**State**|**Description**
221 +|**Lights green**|Relay #1 is closed
222 +|**Off**|Relay #1 is opened
223 +
224 +=== DS8 – relay 2 indicator ===
225 +
226 +|**State**|**Description**
227 +|**Lights green**|Relay #2 is closed
228 +|**Off**|Relay #2 is opened
229 +
230 +=== DS5 – relay 3 indicator ===
231 +
232 +|**State**|**Description**
233 +|**Lights green**|Relay #3 is closed
234 +|**Off**|Relay #3 is opened
235 +
236 +=== DS6 – relay 4 indicator ===
237 +
238 +|**State**|**Description**
239 +|**Lights green**|Relay #4 is closed
240 +|**Off**|Relay #4 is opened
241 +
242 +
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